1 /* $NetBSD: ukphy.c,v 1.27 2006/03/29 07:05:24 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center, and by Frank van der Linden.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 *
39 * $FreeBSD: src/sys/dev/mii/ukphy.c,v 1.2.2.2 2002/11/08 21:53:49 semenu Exp $
40 */
41
42 /*
43 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
44 *
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
47 * are met:
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * 3. All advertising materials mentioning features or use of this software
54 * must display the following acknowledgement:
55 * This product includes software developed by Manuel Bouyer.
56 * 4. The name of the author may not be used to endorse or promote products
57 * derived from this software without specific prior written permission.
58 *
59 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
60 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
61 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
63 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
64 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
65 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
66 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
67 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
68 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69 */
70
71 /*
72 * driver for generic unknown PHYs
73 */
74
75 #include <sys/param.h>
76 #include <sys/systm.h>
77 #include <sys/kernel.h>
78 #include <sys/socket.h>
79 #include <sys/errno.h>
80 #include <sys/module.h>
81 #include <sys/bus.h>
82
83 #include <net/if.h>
84 #include <net/if_media.h>
85
86 #include <machine/clock.h>
87
88 #include "mii.h"
89 #include "miivar.h"
90
91 #include "miibus_if.h"
92
93 static int ukphy_service(struct mii_softc *, struct mii_data *, int);
94 static int ukphy_probe(device_t);
95
96 static device_method_t ukphy_methods[] = {
97 /* device interface */
98 DEVMETHOD(device_probe, ukphy_probe),
99 DEVMETHOD(device_attach, ukphy_attach),
100 DEVMETHOD(device_detach, ukphy_detach),
101 DEVMETHOD(device_shutdown, bus_generic_shutdown),
102 DEVMETHOD_END
103 };
104
105 static devclass_t ukphy_devclass;
106
107 static driver_t ukphy_driver = {
108 "ukphy",
109 ukphy_methods,
110 sizeof(struct mii_softc)
111 };
112
113 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, NULL, NULL);
114
115 static int
116 ukphy_probe(device_t dev)
117 {
118
119 /*
120 * We know something is here, so always match at a low priority.
121 */
122 device_set_desc(dev, "Generic IEEE 802.3u media interface");
123 return (-100);
124 }
125
126 int
127 ukphy_attach(device_t dev)
128 {
129 struct mii_softc *sc;
130 struct mii_attach_args *ma;
131 struct mii_data *mii;
132
133 sc = device_get_softc(dev);
134 ma = device_get_ivars(dev);
135
136 mii_softc_init(sc, ma);
137 sc->mii_dev = device_get_parent(dev);
138 mii = device_get_softc(sc->mii_dev);
139 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
140
141 if (bootverbose) {
142 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
143 MII_OUI(ma->mii_id1, ma->mii_id2),
144 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
145 }
146
147 sc->mii_inst = mii->mii_instance;
148 sc->mii_service = ukphy_service;
149 sc->mii_pdata = mii;
150
151 mii->mii_instance++;
152
153 /*
154 * Don't do loopback on unknown PHYs. It might confuse some of them.
155 */
156 sc->mii_flags |= MIIF_NOLOOP;
157
158 mii_phy_reset(sc);
159
160 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
161 if (sc->mii_capabilities & BMSR_EXTSTAT)
162 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
163
164 device_printf(dev, " ");
165 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
166 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
167 kprintf("no media present");
168 else
169 mii_phy_add_media(sc);
170 kprintf("\n");
171
172 MIIBUS_MEDIAINIT(sc->mii_dev);
173 return(0);
174 }
175
176 int
177 ukphy_detach(device_t dev)
178 {
179 struct mii_softc *sc;
180
181 sc = device_get_softc(dev);
182 sc->mii_dev = NULL;
183 LIST_REMOVE(sc, mii_list);
184
185 return(0);
186 }
187
188 static int
189 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
190 {
191 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
192 int reg;
193
194 switch (cmd) {
195 case MII_POLLSTAT:
196 /*
197 * If we're not polling our PHY instance, just return.
198 */
199 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
200 return (0);
201 break;
202
203 case MII_MEDIACHG:
204 /*
205 * If the media indicates a different PHY instance,
206 * isolate ourselves.
207 */
208 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
209 reg = PHY_READ(sc, MII_BMCR);
210 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
211 return (0);
212 }
213
214 /*
215 * If the interface is not up, don't do anything.
216 */
217 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
218 break;
219
220 mii_phy_set_media(sc);
221 break;
222
223 case MII_TICK:
224 /*
225 * If we're not currently selected, just return.
226 */
227 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
228 return (0);
229
230 if (mii_phy_tick(sc) == EJUSTRETURN)
231 return (0);
232 break;
233 }
234
235 /* Update the media status. */
236 ukphy_status(sc);
237
238 /* Callback if something changed. */
239 mii_phy_update(sc, cmd);
240 return (0);
241 }
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